public static Task<DirectoryInfo> CreateFolderAsync( this DirectoryInfo directoryInfo, string desiredName )
<ExtensionAttribute> Public Shared Function CreateFolderAsync ( directoryInfo As DirectoryInfo, desiredName As String ) As Task(Of DirectoryInfo)
public: [ExtensionAttribute] static Task<DirectoryInfo^>^ CreateFolderAsync( DirectoryInfo^ directoryInfo, String^ desiredName )
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